VOB → MP4
Re-encodes DVD VIDEO_TS VOB files (MPEG-2) as H.264 + AAC MP4, cutting size by 60–80% at equal perceived quality.
Drag files here or click to upload (multiple files supported)
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How to convert VOB to MP4
- 1Upload your VOB file by dragging, clicking, or pasting.
- 2Adjust quality settings if needed.
- 3Click 'Convert Now' and wait for the conversion to complete.
- 4Download your converted MP4 file.
About VOB to MP4 conversion
VOB is a DVD-Video disc container released in 1996, which encapsulates MPEG-2 video and AC-3/DTS/LPCM audio, and single VOB files often exceed 1GB in size. MP4 is a general-purpose digital container that can encapsulate H.264/H.265 video and AAC audio, and supports playback on all platforms. Conversion meets playback requirements for various mobile devices.
The conversion uses CRF constant quality mode to control output quality, preserves all original audio tracks, and keeps the resolution consistent with the original file. The size of converted VOB files originally over 1GB will be reduced. The output MP4 can enable faststart to move the index to the file header, supporting progressive playback.
The converted MP4 can be played natively on Windows 10 and later, macOS 11 and later, and also supports local playback on iPhone 12 and later and mainstream Android devices. It is suitable for archiving DVD content to personal storage devices.
VOB vs MP4: technical comparison
| Feature | VOB | MP4 |
|---|---|---|
| Released | 1996 | 2001 |
| Developer | DVD Forum | MPEG |
FAQ about VOB → MP4
Will the video quality decrease after conversion?
Quality changes are controlled by the CRF parameter. Lower CRF values result in higher quality. The conversion is processed based on FFmpeg, and does not forcibly reduce the quality of the original video.
Will original audio tracks be preserved?
By default, conversion preserves all audio tracks in the VOB file. Original AC-3/DTS tracks can be transcoded to MP4-compatible AAC encoding for compatibility with more playback devices.
What is the single file size limit?
This service has a maximum single file size limit of 50MB, and only one file can be converted at a time. Files exceeding 50MB will be rejected for processing by the system.
Will my files be stored?
Files are uploaded to the server via HTTPS for conversion. After conversion is completed, the server immediately deletes both the source file and the output file, and does not store any files.